🤖 deps: bump github.com/alecthomas/kong from 0.2.11 to 0.2.12 (#43)

Bumps [github.com/alecthomas/kong](https://github.com/alecthomas/kong) from 0.2.11 to 0.2.12.

* Ensure values aren't nil before decoding.
* Fix return err for PrintUsage
* Actually test filename.
* Add NamedFileContentFlag.
* Revert UsageOnMissing.
* Fix README again.
* Unbreak README.
* Call Validate() functions on nodes if present.
* Do not run parent node on missing child err with usageOnMissing option
* Refactor k.FatalIfErrorf to use k.Fatalf
* ...

This merges the following commits:
* deps: bump github.com/alecthomas/kong from 0.2.11 to 0.2.12

     go.mod | 2 +-
     go.sum | 4 ++--
     2 files changed, 3 insertions(+), 3 deletions(-)

Pull-Request: #43

go.mod

@@ -3,7 +3,7 @@ module foxygo.at/s
 go 1.14
 
 require (
-	github.com/alecthomas/kong v0.2.11
+	github.com/alecthomas/kong v0.2.12
 	github.com/stretchr/testify v1.6.1
 	golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a
 )

go.sum

@@ -1,5 +1,5 @@
-github.com/alecthomas/kong v0.2.11 h1:RKeJXXWfg9N47RYfMm0+igkxBCTF4bzbneAxaqid0c4=
-github.com/alecthomas/kong v0.2.11/go.mod h1:kQOmtJgV+Lb4aj+I2LEn40cbtawdWJ9Y8QLq+lElKxE=
+github.com/alecthomas/kong v0.2.12 h1:X3kkCOXGUNzLmiu+nQtoxWqj4U2a39MpSJR3QdQXOwI=
+github.com/alecthomas/kong v0.2.12/go.mod h1:kQOmtJgV+Lb4aj+I2LEn40cbtawdWJ9Y8QLq+lElKxE=
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=